Casting apparatus.



No. 893,037. PATBNTBD JULY 14, 190s.

G. UNDBRWOOD.

CASTING APPARATUS. APPLICATION FILED MAY 11. 1907.

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mm, de@ Mmm@ PATENTED JULY vlllf, 1908.

No.l 893,037.

H. G. UNDERWOOD. CASTING APPARATUS APPLICATION FILED MAY 11. 191

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l ITNESSLIS #5w/;

verse vertical. section with pipe18 .55 secured to the bearing and leading to a IUNITED sTATEs PATENT oEEioE.

yEIERBERT G. UNDERWOOD, OF BRIGHTON, NEW YORK, ASSIGNOR OF ONE-HALF TO WILLIAM S. BRIAN, OF MEMPHIS, TENNESSEE.

CASTIN G APPARATUS.

Specification of Letters Patent.

Patented July 14, 1 908.

Application led May 11, 1907. Serial No. 373,160.

5 have invented certain new and vuseful Im# provements in Casting Apparatus; and I do ereby declare the following to be a-full, clear, and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same. My invention relates no an improvement 1n casting apparatus, the object being to4 obtain increased'speed and convenience in operation; to prevent as far as ossible any defects in the casting due to t e presence of dross,.and to sup ly Huid metal to a plurallty of molds simu taneously, from a single source of supply.

carrying out this invention I provide a horizontally rotating mold carrier with a series of compartments each adapted -to carry a mold, a vacuum chamber communicating with thev mold chambers, means for eX- hausting air in the vacuum chamber and communicating mold compartment'and a pipeor conduit communicating with the severalI molds and leading to the fluid metal receptacle, whereby when the vacuum cham-` ber and mold carrier are rapidly rotated in a horizontalplane, the Hui metal will drawn up by the suction above, and bycf f trifugal action and be simultaneously discharged into the several molds. i

My invention therefore consists in the parts above referredto and in the combinations of parts hereinafter referred to and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in side elevationof my a paratus assembled. 2 is la 'bottom the vacuum chamber. section of same. rnahe mold carrier,

Fig. 3 is avview in and Fig. 5 is a View in transof same.

1 represents an upright standard provided With the parallel horizontalarms 2 and 3, which terminate at their free ends in alined bearings 4 and. 5'forfthe hollow shaft 6. This shaft-Gis mounted directly in bearing 4 and in a stufling box or gland 7, secured in bearing andfthe hollow shaft' are in communication having a valve 9, the pipe being p an view of.

Fig. 4 is a top plan view of 5. The upper face of the bearing,v

vacuum pump or other apparatus (not shown) for eX austing the air from the in'- te'rior ofthe mechanism. The shaft 6 car- 1n the direction indicated by the arrow, and has secured to its lower end,4 the vacuum chamber 12, which as shown, is in direct communication with the hollow shaft 6. This vacuum chamber 12 disk connected centrally to the lower end of the hollow shaft 6, with its interior or chamber in directicommunication with the opening through the shaft, and is rovided in its lower wall with a one for each mold chamber in the mo d carrier. This vacuum chamber 12 is rovided onaits periphery with a plurality o pairs of lugs 14 in which the swinging clamping bolts' by these bolts engage the under side of slotted lu s 17 on the mold carrier 18, and firmly loci and clamp the latter to the underside of the vacuum chamber 12, with the vacuutrvchamber through thel openings 13 wer wall'of the latter.

lmold carrier V18 carries the centrally sed depending hollow shaft 20, which ythe mold carrier, andthe latter is provided with a series (in the present instance four) of mold chambers 19 disposed adjacent to the periphery of the mold carrier,a curved port the hollow shaft 20, as clearly shown in Figs. 4 and 5.

The molds 22 maybe of'anv suitable construction, and are secured y clamps 23 within the chamber 19, with their in communicating with the outer ends o the ports 21, so that the molten metal drawn up by suction and forced outwardly by coinbied suction and centriu pass directly into the mol s. shaft 20 asses through the bearing 24 in arm 25, which) latter is-mounted to turn or swing on standard 1, and forms a mold carrier whenphe latter from the vacuum chamber.

26 is a platform having a sleeve 27 embracing the standard 1 and having a bearing 28 in which is mounted a shaft 29 carryingka pinion 30. This pinion meshes with -rac sup ort for the is isconnected ries the belt wheel 11, by whichsthe shaft, and parts connected thereto, are revolved is in the form of a hollow plurality o`openin s 13, 70

15 are pivotally secured. Nuts 16 carried 75 mold chambers 19 communicating with the 80 mmunicates directly with the interior of 21 connecting each mold chamber 19 with 90 ates The hollow 10o 31 on standard 1 and when `turnedoper- 11u -in the carrier, through the molds 22, out of the latter through the openings 27a, and into the mold chambers and 4from thence through openings 13 into the vacuum chamber and from thence out through shaft 6 and pipe 8. After the apparatus has been thus started'the table 26 carrying the vessel containing the Huid metal, is raised until the lower end of'pipe 21 is submerged. As soon as the latter enters the molten metal, the vacuum thus created above, causes the metal to rise in pipe 20 and into ports 21; as the metal reaches the ports, the vacuum assisted by Icentrifugal force carries the metal outwardly through the ports and into the molds, the air in advance of the metal escaping from the molds through the vent openings 27.

this.V apparatus a plurality of molds may be quickly and lsimultaneously filled, and as the end of pipe 20 should be submerged ncne of the dross which floats on the top will be carried up into` the mold. Again by employing a vacumm for drawing up the metal into the mold, all the air will be expelled from the molds, and more perfect castings will be secured, as the tendency will be for the exhaust to draw the metal into they vent 'openings and thus completely fill the molds.

After the'molds have been illed', the table 26 is lowered and the mold carrier disconnected from the vacuum chamber, thus leaving the arm 25 free to be turned and carry the mold carrier from under the vacuum chamber. After the castings have been removed and the molds replaced the carrier should be returned to its operative position andl the operation repeated.

It is evident that changes in the construction and relative arrangement of the several parts might be made without avoiding my invention and hence I would have it understood that I do not restrict myself to the particular construction and arrangement of parts shown and described, but,-

Having fully described my invention what v I claim as new and desire to secure by Letters-Patent, is,- v

1. In a castingapparatus, the combination of a mold carrier, of a uid metal supply pipe. projecting from the bottom of the mold carrier to conduct metal to a mold therein,

and air exhausting means communicating with'the carrier for exhausting air from a mold therein and raising metal to said mold.

2. In a casting apparatus, the combination with a rotary carrier having a series of mold compartments and ports o r ducts radiating from the center of said carrier to the several mold compartments therein, a depending pipe for fluid metal communicating with the inner ends of the several ports or ducts and air-exhaust means communicating with the' outer` ends of the Aseveral ports or ducts.

3. In a casting apparatus, the combination of a carrier for molds having a series of ports or ducts radiating from its center, means for rotating the carrier, air-exhausting means communicating with the outer ends of the orts or ducts in the carrier, and a depen ing liquid metal su )ply pipe communicating with the inner en s of said ducts.

4. In a casting apparatus the combination with a rotating carrier having a series of mold compartments and a curved port leading from the center of the carrier to each mold compartment, and means for exhausting the air from the several compartments, of a dependin supply pipe communicating with all of sai ports.

5. In a casting apparatus the combination with a cylindrical carrier mounted to rotate on a vertical axis and having a series of chambers arranged adjacent to its periphery, and a port leading from the center ofthe carrier to each chamber, and means for exhausting the air from said chambers, of a centrally disposed supply pipe depending from the carrier, and communicating at its upper end with all of said ports.

6. In a casting apparatus, the combination with a vertical rotating shaft, a vacuum chamber secured to the lower end thereof and a mold carrier secured to said chamber and in communication therewith, of a supply pipe depending centrall from the mold carrier and ports in the atter leading from the supply pipe to the ingates of the several mo s.

7. In a casting apparatus, the combination with a cylindrical rotating carrier having a series of mold compartments arranged adjacent to its periphery and means for exhausting the air from said compartments, of a 'centrally disposed supply pipe depending from the carrier, ports within said carrier and connecting the supply pipe and ingates of the several molds and a vertically movable table located under the carrier.

8. In a casting apparatus, the combination of a hollow rotating shaft, a vacuum chamber carried thereby and communicating with the bore of the shaft, means for exhaustin the air from said chamber, a mold carrier having a series of mold compartments, the said compartments communicating with the vacuum chamber, a supply pipe depending from the carrier and ports leading from the supply pipe to the several mold compartments;

9. In a casting a paratus, the combination with a rotatlng ollow shaft, a vacuum chamber carried thereby andcommunicating with the bore thereof, and means for eX- hausting the air in said chamber, of a supply pipe, a mold carrier securedto the upper end thereof, means for securing the mold carrier to the vacuum chamber and ports leading from the upper end of the supply pipe to the several mold compartments in the carrier.

10. The combination with a "vertical standard having parallel horizontal arms, ayertical hollow shaft mounted in said arms, a yacuum chamber on the lower end ol said I shaft and means for exhausting the air from said'shaft and chamber, of a mold carrier having a series of mold compartments, a

supply pipe depending from said carrier, a

swlnglng arm on said standard having a bearing through which said supply pi e passes, ports in the carrier connecting t e supply pipe and the several compartments,

and means for llocking the carrler to the- H. G. UNDERwooD.

Witnesses:

PHILIP MULLIGAN, THos. A. CoNNERY. 

